Support for sorting and projection on embedded fields.
New structure for configuration which intelligently merges settings.

If there was regular dict, default settings would overwrite settings returned
by EveMongoengine.create_settings method, which is not cool at all.
Introduced new Settings object into EveMongoengine.

Added a few new tests.
Introduced new validator which catches mongoengine validation errors.

Implementation detail: this requires hairy monkey-patch of Eve instance :/
Support for new field types. Added a few tests for them.

Still missing whole bunch of tests on fields.
Fixed documentation malformation. Updated README.
Added support for embedded resource serialization.
Added a few tests for field types. Fixed bug with MapField.
Tiny fix in fixture for http get - where clause.
Tuned EmbeddedDocumentField, added tests for it.